Item Purchase Code Validation - bbPress Plugin

Hello, Does anyone know how to get the bbPress 2.0 version of this plugin to work?

I have added my username and API to the plugin settings, but nothing new shows up during registration in terms of asking a user for a purchase code.

Im using WordPress 3.3.1 w/ Multisite enabled.

Also, if no one does not know how to get the above plugin to work, is there an alternative?

Thanks in advance.

theres actually a plugin on here if you search on codecanyon you’ll find it for sure!